Hyundai Tucson 2.0 CRDi P2002 DPF efficiency fault
Engine management light with fault code P2002 particulate filter efficiency below threshold. Reduced engine power in limp mode. The 2.0 CRDi diesel engine in the Hyundai Tucson Mk3 generates sufficient exhaust temperature for passive DPF regeneration on motorway runs but not in urban use. A professional forced regeneration clears the fault. Fitting a DPF cleaning additive (e.g. Cataclean) to the fuel before the next motorway drive helps maintain filter efficiency between services.
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